Tone-modulating device



Feb. 19, 1929. 1,702,561

P. SANTA EMMA TONE MODULATI NG DEVI CB Filed Oct. 8, 1923 INVEN TOR PZZ-Sgl/(l/8 Saw/a Emma;

A TTORNEYS.

Patented Feb. 19, 1929. I i UNITED STATES PATENT ()FFlCE.

IPASQUALE SANTA EMMA, OF FRESNG, SfiL-IFGBHIML TONE-MODULAIING LDEVEGE.

Application filed October 8, 1923. Sella; no,

This invention relates to tone modulati mav he formed one niece or two of devices and narticularly to term ot nu which consnitu s an improvement over ,1 Qt f uutcd i tilts vention in a cornctmute. l lov 1,:l2sis, dated 0 r. tonenn'idulati devicei 1920. 3 winch 1s helled cur I The are provision will per);

10 produced it art to the general ii e wind in uinent to he incorpo "t to the curva horn ii. It gradually ii l person l of that the wall and then to where it o out un. g straight upvvardlv, as shown a such ho r11 ii Thei v i'ua have a savaged connectiei shown at 15 rom-aim o, with a second pd n 6 oi a h d vice 5.

tone em l2 6 inc 1 controlled t? produce the various 0 the neccssitv mini a mace 0 the reed or ee n the non. ard of such device l) The inve: tion ha for further r" oetv' auchpa provision oi? a device of the ch which is novel, compact as to to" manj; features superior mo provides a device readily red head tion which would corre L )Htl to the dos The purpose of this is to allow an GXPZHISIOD term of horn instrument. oi? sound waves during the playing of the ll ith the above and other objects in view, instrument A. The wall 3 155 reduced in invention consists in the provisionjormadiameter as shown at 16 and accommodates l ,construc ion, association and relativ ara sleeve valve 11 upon said reduced portion. 35 39 raiigement oi? partamemhers and features. all The sleeve valve includes a sleeve within a sho in one emhvdiment in the accoinwhich are transverse perforations or bores 12 3 H21. 7 pa ing drawing, rlescrihed generally, and adapted to register when the sleeve valve is pointed out in the claim. ed properly with corresponding bores lnthe drawing: transversely placed in the reduced portion 35 Figure in an elevation oi the improved 10,all as shown at 13. The sleeve valve is tone modulating device; maintained. on such reduced portion by Figure 2 is a longitudinal sectioi v, slightly flaring the end of such reduced poron. an enlarged scale of the l ell portion oi a tion, as shown at l l. An annular frictional horn w thin which the tone modulatho demember l51splacec llGll the sleeve valve bevice incorporated; neath the openings 12, and the said frictional ire 3 is a cross sectional view, on an en member 15 is adaptec to contact with a porscale of certain features of tie device, tion of the inner wall of the wind instruen on the line 33 of Figure l and ment, shown at 16, when it is desired to use Fi ure 1 s a front view ot' the tone moduthe device B. It will he noted that the ourva- D0 device. ture of the wall 3 is such as to form a space,

Referring); with particularity to the di."awas shown at 17 between the iat er surface of Ie i nates a horn and B the improved the flared portion 1 of the instrument A and one ot iing device. the outer surface of the wall 3 of; the device The horn A may he a comet, a slide trom- B. It will also he noted that the dome por- 50 bone or anv other form of wind instrument in tion 7 extends outwardly from the hell of the which it desired to modulate or vary th horn or wind instrument A. As a brace for quality one quantity of tone emitted from the conical tube 8 I have provided a lap; 18 such win instrument. between the wall 10 and a portion of the n0 rowing the horn A is provided with tube 8.

' i 2, in the usual headed r-. In actual operation I insert the device B The tone modulating device 13 within the bell of the Wind instrument A,

pushing the same inwardly to Where the frictional member 15 tightly engages the inner Wall surface which will hold the device B spaced from such wall at the zone marked 17. If it desired to allow a large volume of sound to be passed through such tone modulating device, as Well as the horn, I may cause registration of the perforations 12 and 13 by grasping-and turning the dome portion oi the device B so that such perforations register, registration being determined by the quality of tone emitted, and it will be noted that th sound will be allowed to pass through the annuler space included within the tube 8 shown at 20 and outwardly irom such device 13, as well 'ough the perforations and the space included between the Walls 1 and 3. If wish to modulate the tone to volume I may turn the sleeve valve by rotating the device .3 which Wiil close "'"oration'or perforations 13 over the p or perforations 12 or I may conr it so that none of the perforations In this connection it is noted that the 12 or 13 where there a pit. same are spacedly arranged so may be no registration 01% anv of the per1orations, but all connection the space 1? is closed and hence all sound must pass through the space 20. It is further noted that the sound will enter between the parts 3 and 8 and there in a measure absorbed, refiected back by the dome so to perform a muting operation and change the tone quelity or tone emitted i y the wind instrument A This device gives a wide variety of sounds, allows the musician to regulate at will the volume of such sounds and permit tricl: playing oi a wind instrument.

It is obvious that various changes and modifications may be made in practicing the ition, in departure from the particular so ing and description 5; n, without deus from true spirit oi the invention. we thus (flisclosed my invention, I and desire to secure Letters l?tent: A tone modulating device, compi hell-sheped outer member, 2. tapered inner wall member joined to the outer Wall memher at one end to form an enlarged dome sound reflecting chamber; said outer wall member having' at portion of reduced diamcter, formed w'th a perforation, and a sleeve provided with a p foration adapted to register at times witi the perforation of the outer wall member. 7

testimony whereof, I have signed my name to this specification.

PASQUALE SANTA EMMA. 

